<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<h1>第二个页面</h1>
	</body>
	<script type="text/javascript">
		setInterval(function(){
			var mes = Math.random();
			window.parent.postMessage(mes,'http://127.0.0.1:8020')
		},10000)
	</script>
</html>
